Right on schedule, Research In Motion’s (RIM) new on-device, BlackBerry mobile application store, BlackBerry App World, opened its virtual doors for business yesterday, in time for the Spring 2009 CTIA Wireless event in Las Vegas.

RIM was nice enough to share key details and screenshots of the new storefront ahead of time.

The news of the much anticipated App World CTIA launch broke last week, but the move was more-or-less expected as RIM had previously stated that App World would open in March.

(Wireless carriers may also push an App World link to customers’ home screens for easy access.)

I haven’t had the time to put App World through the motions quite yet, but you can expect a full review in the very near future.

Until then, here’s what we now know about BlackBerry App World, as well as a dozen images of what the new software store looks like and how it works.

BlackBerry App World software will sell for $2.99 and up, though free apps will also be available

A PayPal account is required to purchase apps from BlackBerry App World, though free software can be downloaded without PayPal

The BlackBerry App World home screen offers 1) Featured Apps 2) a Categories icon that lets you navigate apps by “genre” i.e., Games or Music and Video 3) a Top Downloads link for quick access to the most popular apps 4) a dedicated Search function and 5) a My World icon, which lets you access your account information and view/install/uninstall your App World software

App World users can scroll left and right on the home screen to view different Featured Apps

The Search bar on specific Categories pages helps find exactly what you seek.

After finding an application of interest, you can click its name to display additional details, such as the app maker, price, ratings and screen shots.

Once you locate an app, you can purchase it via PayPal with just a few clicks: one click for the Download button, another for the PayPal login screen–you must also enter your account information–and you’re good to go.

You can write application reviews directly from the My World screen on your device.

If you purchase a new handset, any and all apps you bought from App World can be transferred to the new device free of charge to as many as three devices per year.

Any and all apps you purchase can be deleted from your device and reinstalled as many times as you please, so App World also works as a virtual storage unit for software you download of purchase through the store.

Such a service would be both new and exciting. It would also make perfect sense, as simple TV/movie content delivery is a clear advantage Apple and its iTunes Store currently have over RIM and other handset makers.

The BlackBerry TV rumor originated on NewTeeVee.com, and the blog provides the following additional details:

It will be an unlimited monthly subscription service for a fee

Once a user orders a program, the content will be downloaded in the background over Wi-Fi

Multiple broadcast and cable networks have licensed content for the service

If the report pans out, RIM just may give the iTunes Store a run for its dollars.

As described, it would provide a couple of advantages over the current iTunes content delivery system: 1) Such a service would allow you to bypass your PC and download video content directly to a BlackBerry over Wi-Fi, and 2) a monthly subscription model would enable you to view more content for less, i.e., get more bang for your buck, since monthly content availability would be unlimited—though pricing information is unavailable.

iPhone owners must plug their devices into a PC to transfer video content. And most standard definition TV shows on iTunes costs $1.99 an episode, which can add up rapidly.

A few technical unknowns still remain, however. One question that jumps immediately to mind is how BlackBerry Storm owners, who lack Wi-Fi in their devices, will take advantage of the service.

Considering the BlackBerry Storm has the largest display of any BlackBerry, which makes it best suited for video viewing, it seems unlikely that RIM would leave the Storm off the list of support devices on launch day.

One simple solution is that RIM will also offer a desktop-based App World purchasing option, so users without Wi-Fi can still join in the fun.

This might not be ideal for Storm owners, as it could severely hinder the service’s value to business travelers and other folks on the go.